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WAP/WML templates require a php Content-Type header to be passed along with the template. The easist way to do this would be to write a custom function that prints the header. If you are using caching, that won't work so we'll do it using the {insert} tag; remember {insert} tags are not cached! Be sure that there is nothing output to the browser before the template, or else the header may fail.

Example 18.6. Using {insert} to write a WML Content-Type header


// be sure apache is configure for the .wml extensions!
// put this function somewhere in your application, or in Smarty.addons.php
function insert_header($params)
   // this function expects $content argument
   if (empty($params['content'])) {



your Smarty template must begin with the insert tag :

{insert name=header content="Content-Type: text/vnd.wap.wml"}

<?xml version="1.0"?>

<!-- begin new wml deck -->
 <!-- begin first card -->
  <do type="accept">
   <go href="#two"/>
   Welcome to WAP with Smarty!
   Press OK to continue...
 <!-- begin second card -->
 <card id="two">
   Pretty easy isn't it?


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